Merge pull request #12 from papadanku/dev

cColor: Changed lightness changing

shaders/cLens.fx

@@ -39,7 +39,7 @@
 uniform float _Time < source = "timer"; >;
 
 uniform bool _UseTimeSeed <
-    ui_label = "Enable Time-Based Seed";
+    ui_label = "Enable Time Seed";
     ui_type = "radio";
 > = true;
 

shaders/cRaySchism.fx

@@ -99,28 +99,12 @@
     > = false;
 #endif
 
-uniform float _GradePostExposure <
+uniform float _GradeLightness <
     ui_category = "Color Grading | Color Adjustments";
-    ui_label = "Post Exposure";
+    ui_label = "Post Lightness Bias";
     ui_type = "drag";
 > = 0.0;
 
-uniform float _GradeContrast <
-    ui_category = "Color Grading | Color Adjustments";
-    ui_label = "Contrast";
-    ui_type = "slider";
-    ui_min = -1.0;
-    ui_max = 1.0;
-> = 0.0;
-
-uniform float3 _GradeColorFilter <
-    ui_category = "Color Grading | Color Adjustments";
-    ui_label = "Color Filter";
-    ui_type = "color";
-    ui_min = 0.0;
-    ui_max = 1.0;
-> = 1.0;
-
 uniform float _GradeHueShift <
     ui_category = "Color Grading | Color Adjustments";
     ui_label = "Hue Shift";
@@ -137,6 +121,22 @@ uniform float _GradeSaturation <
     ui_max = 1.0;
 > = 0.0;
 
+uniform float _GradeContrast <
+    ui_category = "Color Grading | Color Adjustments";
+    ui_label = "Contrast";
+    ui_type = "slider";
+    ui_min = -1.0;
+    ui_max = 1.0;
+> = 0.0;
+
+uniform float3 _GradeColorFilter <
+    ui_category = "Color Grading | Color Adjustments";
+    ui_label = "Color Filter";
+    ui_type = "color";
+    ui_min = 0.0;
+    ui_max = 1.0;
+> = 1.0;
+
 uniform float _GradeTemperature <
     ui_category = "Color Grading | White Balance";
     ui_label = "Temperature";
@@ -198,55 +198,55 @@ uniform float3 _GradeMixBlue <
 > = float3(0.0, 0.0, 1.0);
 
 uniform float3 _GradeMidtoneShadowColor <
-    ui_category = "Color Grading | Shadows Midtones Hightlights";
+    ui_category = "Color Grading | Shadows, Midtones, Hightlights";
     ui_label = "Shadow Color";
     ui_type = "color";
     ui_min = 0.0;
     ui_max = 1.0;
 > = float3(1.0, 1.0, 1.0);
 
 uniform float3 _GradeMidtoneColor <
-    ui_category = "Color Grading | Shadows Midtones Hightlights";
+    ui_category = "Color Grading | Shadows, Midtones, Hightlights";
     ui_label = "Midtone Color";
     ui_type = "color";
     ui_min = 0.0;
     ui_max = 1.0;
 > = float3(1.0, 1.0, 1.0);
 
 uniform float3 _GradeMidtoneHighlightColor <
-    ui_category = "Color Grading | Shadows Midtones Hightlights";
+    ui_category = "Color Grading | Shadows, Midtones, Hightlights";
     ui_label = "Highlight Color";
     ui_type = "color";
     ui_min = 0.0;
     ui_max = 1.0;
 > = float3(1.0, 1.0, 1.0);
 
 uniform float _GradeMidtoneShadowStart <
-    ui_category = "Color Grading | Shadows Midtones Hightlights";
+    ui_category = "Color Grading | Shadows, Midtones, Hightlights";
     ui_label = "Shadows Start";
     ui_type = "slider";
     ui_min = 0.0;
     ui_max = 1.0;
 > = 0.0;
 
 uniform float _GradeMidtoneShadowEnd <
-    ui_category = "Color Grading | Shadows Midtones Hightlights";
+    ui_category = "Color Grading | Shadows, Midtones, Hightlights";
     ui_label = "Shadows End";
     ui_type = "slider";
     ui_min = 0.0;
     ui_max = 1.0;
 > = 0.3;
 
 uniform float _GradeMidtoneHighlightStart <
-    ui_category = "Color Grading | Shadows Midtones Hightlights";
+    ui_category = "Color Grading | Shadows, Midtones, Hightlights";
     ui_label = "Highlights Start";
     ui_type = "slider";
     ui_min = 0.0;
     ui_max = 1.0;
 > = 0.55;
 
 uniform float _GradeMidtoneHighlightEnd <
-    ui_category = "Color Grading | Shadows Midtones Hightlights";
+    ui_category = "Color Grading | Shadows, Midtones, Hightlights";
     ui_label = "Highlights End";
     ui_type = "slider";
     ui_min = 0.0;
@@ -499,11 +499,11 @@ float4 PS_Composite(CShade_VS2PS_Quad Input) : SV_TARGET0
     // Apply color-grading
     CColor_ApplyColorGrading(
         BaseColor,
-        _GradePostExposure,
-        _GradeContrast,
-        _GradeColorFilter,
+        _GradeLightness,
         _GradeHueShift,
         _GradeSaturation,
+        _GradeContrast,
+        _GradeColorFilter,
         _GradeTemperature,
         _GradeTint,
         _GradeShadows,

shaders/shared/cColor.fxh

@@ -523,11 +523,11 @@
 
     void CColor_ApplyColorGrading(
         inout float3 Color,
-        float PostExposure, // [0.0, N); default = 0.0
-        float Contrast, // [-1.0, 1.0); default = 0.0
-        float3 ColorFilter, // [0.0, 1.0); default = 1.0
+        float Lightness, // [0.0, N); default = 0.0
         float HueShift, // [-180.0, 180.0); default = 0.0
         float Saturation, // [-1.0, 1.0); default = 0.0
+        float Contrast, // [-1.0, 1.0); default = 0.0
+        float3 ColorFilter, // [0.0, 1.0); default = 1.0
         float Temperature, // [-1.0, 1.0); default = 0.0
         float Tint, // [-1.0, 1.0); default = 0.0
         float3 Shadows, // [0.0, 1.0); default = float3(0.5, 0.5, 0.5)
@@ -550,28 +550,18 @@
 
         // Convert user-friendly uniform settings
         float3x3 ChannelMixMat = float3x3(MixRed, MixGreen, MixBlue);
-        PostExposure = exp2(PostExposure);
         Contrast += 1.0;
         HueShift = (HueShift / 360.0) * CMath_GetPi();
         Saturation += 1.0;
         Temperature /= 10.0;
         Tint /= 10.0;
 
-        // Apply post exposure
-        Color *= PostExposure;
-
-        // Apply contrast
-        Color = CColor_EncodeLogC(Color);
-        Color = (Color - ACEScc_MIDGRAY) * Contrast + ACEScc_MIDGRAY;
-        Color = CColor_DecodeLogC(Color);
-        Color = max(Color, 0.0);
-
-        // Apply color filter
-        Color *= ColorFilter;
-
         // Convert RGB to OKLab
         Color = CColor_GetOKLABfromRGB(Color);
 
+        // Apply lightness bias
+        Color.x += Lightness;
+
         // Apply temperature shift
         Color.z += Temperature;
 
@@ -590,6 +580,13 @@
         // Convert OKLch to RGB
         Color = CColor_GetRGBfromOKLCH(Color);
 
+        // Apply color filter
+        Color *= ColorFilter;
+
+        // Apply contrast
+        Color = CColor_EncodeLogC(Color);
+        Color = (Color - ACEScc_MIDGRAY) * Contrast + ACEScc_MIDGRAY;
+        Color = CColor_DecodeLogC(Color);
         Color = max(Color, 0.0);
 
         // Apply gamma-space split-toning
@@ -616,7 +613,9 @@
 
         float3x3 MidtoneColorMatrix = float3x3
         (
-            MidtoneShadowColor, MidtoneColor, MidtoneHightlightColor
+            MidtoneShadowColor,
+            MidtoneColor,
+            MidtoneHightlightColor
         );
 
         Color *= mul(MidtoneWeights, MidtoneColorMatrix);